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fatjay
Veteran Member
Got some benches made, separated into 2 banks, and got the top balance chargers on.
New garage time!
- Thread starter fatjay
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fatjay
Veteran Member
Talk about busy work. I'm debating hooking one up to the inverter and charging from that to 80%, then breaking it down again and top balancing from there.
I guess I can't configure the bms from the inverter even with coms. I guess my next adventure is in figuring out how to configure bms's.
I guess I can't configure the bms from the inverter even with coms. I guess my next adventure is in figuring out how to configure bms's.
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fatjay
Veteran Member
I got lucky. I ran ethernet from the bms port on the inverter, and hooked up a pack with bms, and boom. first protocol worked. Now the inverter knows the voltage.
Problem is I don't know how to tell the bms how big it's pack size is. It does not have bluetooth.
Problem is I don't know how to tell the bms how big it's pack size is. It does not have bluetooth.
airbiscuit
Super Member
- Joined
- Aug 28, 2004
- Messages
- 6,566
- Location
- NW Wisconsin
- Tractor
- New Holland T2310 (40hp), Kubota L3010 GST, New Holland TC21DA *** Previously - Farmall H, 1941 John Deere B, Shibaura SD1500, John Deere 850, Bobcat 642, New Holland 1925
So, not exactly plug and play?
airbiscuit
Super Member
- Joined
- Aug 28, 2004
- Messages
- 6,566
- Location
- NW Wisconsin
- Tractor
- New Holland T2310 (40hp), Kubota L3010 GST, New Holland TC21DA *** Previously - Farmall H, 1941 John Deere B, Shibaura SD1500, John Deere 850, Bobcat 642, New Holland 1925
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fatjay
Veteran Member
Not quite. But it’s not terrible. Just lots of wires and figuring out where they go.
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fatjay
Veteran Member
So I'm at 97% battery and charging has slowed considerably. I set it to 55.5v for back2ac. The charger basically topped out at 56.1v for the battery. There is a 0.5v drop between the battery and the inverter.
All settings are on the inverter, nothing with SA automation.
It should have switched back by now. But it hasn't.
All settings are on the inverter, nothing with SA automation.
It should have switched back by now. But it hasn't.
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fatjay
Veteran Member
As I hit submit, I heard a beep indicating that it was switching priority. Battery is a go!
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fatjay
Veteran Member
Now with battery hooked up I can see what the panels are actually pushing out. Looks like 3600w of panels at 18 degrees on the winter solstice where 44 degrees is optimal can do 2500w. It's currently 21f, which is probably helping some.
This is 15x panels where I have 45x to put up, so I should be able to get 7500w out of it next winter during the shortest day.
This is 15x panels where I have 45x to put up, so I should be able to get 7500w out of it next winter during the shortest day.
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fatjay
Veteran Member
Just finished top balancing pack 3, hooked everything up and all the cells are dead on, except cell 1, which is a bit lower. I'm wondering if it's the draw of powering the bms that's lowering that specific cell. I don't recall this happening on the previous packs.
